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This spotted lagoon jellyfish (Mastigia papau) is very closely related to the Golden Mastigia found in the popularly called jellyfish lake. Found in bays, harbors and lagoons in the tropical Pacific. Unlike its jellyfish lake cousin this particular species possess stinging cells for feeding and protection. This species feeds on the minute plankton and organic particles via its thick strange looking oral arms, which contain very small mouths. It receives some nutrition from photosynthetic activity of the zooxanthallae algae stored within itself, as such it mostlikely requires strong light above the tank.

Chrysaora quinquecirrha (known as the Atlantic sea nettle or East Coast sea nettle) is a species of jellyfish that inhabits Atlantic estuaries, such as the Chesapeake Bay. It is smaller than the Pacific sea nettle, and has more variable coloration, but is typically pale, pinkish or yellowish, often with radiating more deeply-colored stripes on the exumbrella, especially near the margin.

The moon jellyfish, Aurelia Aurita (Linnaeus, 1758), aka saucer jelly, moon jelly and common sea jelly, range between 5-40 external cm in diameter. They can be recognized by their delicate and exquisite coloration, often in patterns of spots and streaks. Their behavior depends on a number of external conditions, in particular, food supply. Aurelia swim by pulsations of the bell-shaped upper part of the animal. Swimming mostly functions to keep the animal near the surface of the water rather than to make progress through the water. They swim horizontally, keeping the bell near the surface at all times. This allows the tentacles to be spread over the largest possible area, in order to better catch food. The coronal muscle allows the animal to pulsate in order to move. Impulses to contract are sent by way of the subumbrellar nerve net and are nervous in origin. The moon jelly has rhopalial centers, which allow it to control the pulsations. As the oxygen rate in the water goes down, so too does the respiratory rate of the jellyfish.